# Physics Question?

Calculate the mass of the earth from the period

of the moon (27.3 d) and its mean orbital

radius of 3.84 × 10^8 m.

The universal gravitational constant is

6.673 × 10−11 N · m^2/kg^2.

Answer in units of kg.

of the moon (27.3 d) and its mean orbital

radius of 3.84 × 10^8 m.

The universal gravitational constant is

6.673 × 10−11 N · m^2/kg^2.

Answer in units of kg.

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